Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7212730 | Composites Part B: Engineering | 2016 | 8 Pages |
Abstract
Low mechanical strength and low thermal stability of pristine epoxy-based shape memory polymer (ESMP) hinder its practical applications, and the usually used reinforcing fillers are expensive. In this study, thermally reduced graphite oxide (TrGO) was used as a low-cost but efficient reinforcement phase for ESMP. Compared with pristine ESMP, an increase of 41%-71% for Young's modulus and 44%-64% for tensile strength were observed for the TrGO/ESMP composites containing only 1-3Â wt.% TrGO. Thermogravimetric analysis (TGA) showed that 2Â wt.% TrGO can improve the thermal stability of ESMP significantly. The thermal conductivity of TrGO/ESMP composites increased almost linearly with increasing TrGO content. Moreover, The TrGO/ESMP composite containing 2Â wt.% TrGO can decrease the shape recovery time of ESMP down to 1Â min as a result of enhanced thermal conductivity. The TrGO/ESMP composites with such improved properties may have great potential in smart systems.
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Physical Sciences and Engineering
Engineering
Engineering (General)
Authors
Lei Chen, Wenbing Li, Yanju Liu, Jinsong Leng,